Cataraft Yoke Placement? - Mountain Buzz
 



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Old 2 Days Ago   #1
 
Join Date: Feb 2020
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Cataraft Yoke Placement?

So I got my first cat halfway through last summer and the guy I bought it from and almost every other setup I have ever seen has the yokes placed at the far front and far rear of the frame, which makes perfect sense on a welded frame. But I'm looking at this modular frame and I'm wondering why you wouldn't have the yokes 1/4 to a 1/3 of the way in from either end of the side rails to make it more rigid? Obviously this would limit some of the modularity of the frame but if you've got a setup locked in that you like so what? Is there something I'm missing here?

This is my first post here ever so I apologize if this is in the wrong forum.

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Old 2 Days Ago   #2
 
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Are we talking about the drops(yokes)?
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Old 1 Day Ago   #3
 
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Yokes as seen on the front and back of an NRS or NRS style modular frame like this. Not drop rails.
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Old 1 Day Ago   #4
 
, CO/UT
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This is something I've been wondering about as well especially as I (new to cat ownership) consider bumping a modular NRS foot bar up front of my (secondhand) frame. It seems to me that with a relatively short frame (just under 9') on my 18' x 22" tubes the end-on yokes are probably near-requisite.



I want to provide web floor anchorage point and better footrest option for elderly passengers on an upcoming mellow trip (I have, and very much dislike, a ghetto style welded + 2x4' construction footrest doodad that hoseclamps to front yoke...I feel that it has too many sharp edges and presents foot entrapment/trip hazard for my folks).



An alternative that I've been considering is seen here in RaftPron post 1366 (https://www.mountainbuzz.com/forums/f44/raft-porn-needed-lets-see-them-rigs-40045-137.html) via use of something like the NRS solid solid rod inserts (https://www.nrs.com/product/1200%20r...own-side-rails) to connect custom bent spreader for floor? Or...? Sorry to add other tangents, OP.
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Old 1 Day Ago   #5
 
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I appreciate this tangent. That extended floor idea is interesting and something I had bouncing around my brain but hadn't looked for reference photos of yet.

Still doesn't answer my question as to why you wouldn't or couldn't swap the position of that front yoke and first cross bar and/or the rear yoke and rear-most crossbar. I guess I'll just have to set it up and give it a whirl.
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Old 1 Day Ago   #6
 
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Poundtown, Wokastan
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I don't think rigidity is a problem with NRS frames. If you move the yoke, then that changes storage options. Boats pack easier when the top and bottom are the same. Also having the yokes near end leaves a shorter strap on the inside to the frame d rings up front. Your mileage my very so give it a shot. Who knows it might be all the rage.
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I saw someone do it on youtube.
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Old 1 Day Ago   #7
 
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What are your tubes? Hypalon or PVC?

What class of rivers do you plan to adventure?

Probably doesn't matter much.
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Old 1 Day Ago   #8
 
, CO/UT
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PVC tubes m'self
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Old 1 Day Ago   #9
 
La Grande, Oregon
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More Rigid?

Not exactly sure why it would be more rigid. You usually tie the lower frame to the tubes anyway. The only problem I would see is with the lower frame sticking out in front of the yoke, you are putting a lot of stress on them if you hit something with the front or rear tube on an angle. But probably not an issue
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Old 1 Day Ago   #10
 
, CO/UT
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Oops, I plan to run mostly mellow SW USA silt highways but up to and including the Grand (would definitely not be running this unyoked front-most portion on the GC)....My concern is exactly what salmonjammer hit on...in event of collision the long lever arm of front tubes working to warp in the lower rails without a spreading lower bar...so maybe mix in or use instead the NRS (https://www.nrs.com/product/1806%20s...l-spreader-bar) - or some kinda homebuilt - lower spreader to keep the front of the lower rails spread out and the floor taught...


there is an interesting rear cat extension that is not (to my eye) a typical tail end yoke in Raftpron post 1466 (https://www.mountainbuzz.com/forums/...40045-147.html)
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